Cited by 130Protein Degradation and InhibitorsProtein Tyrosine PhosphatasesChemical Synthesis and Analysis

Modulation of Phosphoprotein Activity by Phosphorylation Targeting Chimeras (PhosTACs)

Open access
Chen, Po-Han, Hu, Zhenyi, An, Elvira, Okeke, Ifunanya, Zheng, Sijin, Luo, Xuanmeng, Gong, Angela, Jaime-Figueroa, Saul +1 more·2021·ACS Chemical Biology

Abstract

Protein phosphorylation, which regulates many critical aspects of cell biology, is dynamically governed by kinases and phosphatases. Many diseases are associated with dysregulated hyperphosphorylation of critical proteins, such as retinoblastoma protein in cancer. Although kinase inhibitors have been widely applied in the clinic, growing evidence of off-target effects and increasing drug resistance prompts the need to develop a new generation of drugs. Here, we propose a proof-of-concept study of phosphorylation targeting chimeras (PhosTACs). Similar to PROTACs in their ability to induce ternary complexes, PhosTACs focus on recruiting a Ser/Thr phosphatase to a phosphosubstrate to mediate its dephosphorylation. However, distinct from PROTACs, PhosTACs can uniquely provide target gain-of-function opportunities to manipulate protein activity. In this study, we applied a chemical biology approach to evaluate the feasibility of PhosTACs by recruiting the scaffold and catalytic subunits of the PP2A holoenzyme to protein substrates such as PDCD4 and FOXO3a for targeted protein dephosphorylation. For FOXO3a, this dephosphorylation resulted in the transcriptional activation of a FOXO3a-responsive reporter gene.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1021/acschembio.1c00693

Cites

37 of 37 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

1 retracted

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Chen, P.-H., Hu, Z., An, E., Okeke, I., Zheng, S., Luo, X., Gong, A., Jaime-Figueroa, S., & Crews, C. M.
Affiliations
  • Yale University (US)
  • Department of Molecular, Cellular, and Developmental Biology, Yale University, Yale Science Building, 260 Whitney Avenue, P.O. Box 208103, New Haven, Connecticut 06520-8103, United States
Corresponding author
Crews, Craig M.
Venue
ACS Chemical Biology
Published
2021-11-15
Volume
16
Issue
12
Pages
2808-2815
ISSN
  • 1554-8929 (ISSN-L)
  • 1554-8937
OpenAlex
W3212685950
Cited by
130
References
37
Citations by year
2026: 33 · 2025: 30 · 2024: 25 · 2023: 24 · 2022: 18
FWCI
5.26
Type
journal article
Language
en
Open access
Locations
  • ACS Chemical Biology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Cancer Institute (R35 CA197589)
  • Defense Advanced Research Projects Agency (HR0011-20-2-0051)
  • Halda Therapeutics, LLC
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chemical Synthesis and Analysis
Keywords
protein dephosphorylation, PP2A holoenzyme, PROTACs, ternary complex, PDCD4, FOXO3, hyperphosphorylation, kinase inhibitors, drug resistance, transcriptional activation
MeSH terms
Forkhead Box Protein O3, Chimera, Enzyme Activation, HeLa Cells, Humans, Phosphoproteins, Phosphorylation, Structure-Activity Relationship, RNA-Binding Proteins, Protein Tyrosine Phosphatases, Holoenzymes, Catalytic Domain, Apoptosis Regulatory Proteins

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review